Rihanna and Adele have been pretty vocal about their mutual girl crushes on one another for some time now. It should, therefore, come as no surprise that Ri didn't let the Brit singer's 24th birthday (May 5) go by without sending her a very special -- slightly naughty -- surprise, AOL Music reports!

The blinged-out baked good was reportedly delivered to Adele's North London home for her birthday party and accompanied by a message that read, "To Adele Laurie Blue Adkins, the baddest b----h around. Have the best freaking Bday. Cake cake cake xxx."